Piston-operating mechanism for oil-pumps.



, 0. POTTBL. PISTON OPERATING MECHANISM FOR OIL PUMPS. APPLICATION FILED MAY 21, 1913.

1,084,293. Patented Jan. 13, 1914.

COLUMBlA PLANOGRAPH C0.,W/\SHINGTON. D. c.

UNITED STATES PATENT oEEicEf.

CARL POTTEL, OF HALLE, GERMANY.

PISTON-OPERATING MECHANISM FOR OIL-PUMPS.

To all whom it may concern Be it known that I, CARL PoTTEL, a subject of the King of Prussia, German Emperor, residing at Halle, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Piston-Operating Mechanism for Oil- Pumps, of which the following is a specification.

This invention relates to a device for the forced driveof the pistons of oil distributing boxes which is constructed so that the driving is effected in a very simple manner and the apparatus can be made at little expense.

According to the inventionno intermediary pieces surrounding the shaft and no springs are used, the movement being transmitted by curved transmission pieces ar ranged between two adjacent pistons in such a manner that when one piston is moved forward the adjacent piston is pressed against the crank by means of said curved transmission piece. The curved transmission pieces are arranged so that they can move as freely as possible, loss from friction being thus avoided.

In the accompanying drawings the invention is shown by way of example.

Figure 1 is a longitudinal section through the lower part of an oil distributing box. Fig. 2 is a plan view partly in section.

In the box 1 the crank shaft 2 is mounted the cranks of which are arranged in such a manner that each crank drives two pistons. The cranks stand at an angle of'180 the one with regard to the other. The pistons Specification of Letters Patent.

Application filed May 21, 1913.

Patented Jan. 13, 1914..

Serial N o. 769,053. 7

3 have heads 4 which bear against the cranks. Each piston of one pair of pistons is connected with one piston of the next pair by means of a curved transmission piece 5 the ends of which are fork-shaped and bear against the heads 4 of the pistons. The middle parts of the curved transmission pieces rest upon the wall of the casing. g

The operation of the device is easily understood from the drawings.

If one of the two connected pistons goes down the corresponding end of the transmission piece 5 is lowered with said piston so that the connecting piece oscillates and its other end, lifting the other piston presses the same against the crank.

I claim A device for the forced driving of the pistons of oil distributing boxes comprising in combination with the oil distributing box, pistons arranged in pairs, heads on said pistons, a crank shaft revolubly mounted in said box designed to drive one pair of pistons by one crank, curved transmission pieces between two pistons of two adjacent cranks, said transmission pieces having fork shaped ends embracing the corresponding piston rods and bearing against the piston heads, substantially as described and shown and for the purpose set forth.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

CARL POTTEL.

Witnesses DUDOLPH FRIoKE, DAVIS KRAHL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

